Greenfish recently worked with a recycling company to study the solutions to treat high-chlorinated waste. Before the project, this waste stream was landfilled and, therefore, detrimental to the company’s environmental impact. Combining a technical and market approach enabled Greenfish to provide all the inputs to avoid this end-of-life scenario. This case-study briefly summarizes the results of both aspects of the study.

A technical approach…

Greenfish started by identifying and analysing techniques for recycling high-chlorinated waste on their applicability at the client and their feasibility. Four different possibilities were depicted (see Figure 1):

  1. Incineration entails burning the waste, producing CO2 and heat as an output. This is an easy and mature technique that the client could implement at a relatively low cost, provided certain conditions are respected.
  2. Gasification is the process of chemical conversion transforming the waste into syngas. The latter could then, in turn, be transformed to be commercialized as transportation fuels, chemicals, fertilizers or substitute natural gas.
  3. Co-combustion consists in mixing the specific waste with municipal solid waste to balance the adverse impacts of the most polluting one. Energy is then recovered after combustion of the whole. The amount of energy recovery strongly depends on the waste constituents.
  4. Pyrolysis is a thermo-chemical treatment during which waste is exposed to high temperatures in the absence of air. This complex process produces fuels with a good conversion waste-to-kWh.
Figure 1: Overview of technical solutions to treat high-chlorinated waste (results blurred for confidentiality reasons)

For each technique, the advantages and disadvantages of use in the client’s case were detailed. This required to investigate financial and environmental costs, scalability, and ease of implementation. From there, technical recommendations were proposed. Greenfish excluded pure gasification and pyrolysis due to financial and environmental costs. Incineration using fluidised beds or rotary kilns and co-combustion seemed technically more realistic though. The final choice for the client would rely on the market study to make sure that partners would be willing to take in the waste using the specific selected techniques.

… combined with a market analysis…

In a second step, Greenfish identified and contacted relevant partners that could handle the waste stream. In a radius of 300km around the client’s site, we contacted 26 potential partners. 5 of them confirmed their interest and the feasibility of the technical solution. Greenfish recommended continuing working with 3 of them given their location and prices to take in the chlorinated waste. Acting as an intermediary allowed to provide fast action-points for the client to get rid of its specific waste, hence reducing its environmental footprint.

…to deliver sustainable results

Solid and water waste often represent issues for companies. Greenfish helps them understand their waste streams and finds solutions to better valorize them, through technical knowledge and market insights.

Do you want to know more about this project? Do you think Greenfish can support you in a similar study? Feel free to contact us at hi@greenfish.